Klipsch Chorus II for $600, yes or no?

The Klipsch Chorus, either the series 1 or 2, was never a Heritage model, although I suspect, if production continued, as happened with the Forte, they would become marketed as a Heritage model. Because I feel PWK was a brilliant guy, I initially took offense of the Forte becoming a Heritage model, as the 5 original Heritage models, were designed by PWK himself. Marketing has made the Forte a Heritage model, as they are 100 % built here, at the Klipsch factory, with matching veneers. As far as the Chorus for $600. is concerned, I would suggest you listen to them, and if you like them, determine if they will work in your room. As wolf mentioned, there are parts, tweaks and updates available, that can bring them up another level or two. If you like the KG4, you will like the Chorus quite a lot. Enjoy ! MrD.

On another positive note, the Chorus 2, went from a front ported enclosure, to a sealed enclosure, using a rear facing passive radiator, and was much more successful in sales, and was produced for twice as long, as the series 1.

" About the crossover swapout, are these really necessary? What difference would it make to the sound vs. just leaving the speakers at factory spec? "
  OK if those capacitors were in spec there would be no reason to rebuild. I use a B&K 885 meter to measure inductance and capacitance and I will tell you flat out those appx 30 year old capacitors will have high ESR at the least and the capacitance may have drifted too. I have gone through dozens of sets of old Klipsch speakers and not one set of crossovers was factory spec. If you know how to solder this is easy to do and won't cost much. Last set of Chorus I's I had were pretty sour until recapped and I wish you could have heard the difference before you asked this question.

Yes, grab them.  Or PM me and I will.